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/* IBM_PROLOG_BEGIN_TAG                                                   */
/* This is an automatically generated prolog.                             */
/*                                                                        */
/* $Source: src/include/kernel/msg.H $                                    */
/*                                                                        */
/* OpenPOWER HostBoot Project                                             */
/*                                                                        */
/* COPYRIGHT International Business Machines Corp. 2010,2014              */
/*                                                                        */
/* Licensed under the Apache License, Version 2.0 (the "License");        */
/* you may not use this file except in compliance with the License.       */
/* You may obtain a copy of the License at                                */
/*                                                                        */
/*     http://www.apache.org/licenses/LICENSE-2.0                         */
/*                                                                        */
/* Unless required by applicable law or agreed to in writing, software    */
/* distributed under the License is distributed on an "AS IS" BASIS,      */
/* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or        */
/* implied. See the License for the specific language governing           */
/* permissions and limitations under the License.                         */
/*                                                                        */
/* IBM_PROLOG_END_TAG                                                     */
#ifndef __KERNEL_MSG_H
#define __KERNEL_MSG_H

#include <kernel/types.h>
#include <sys/msg.h>
#include <kernel/spinlock.H>
#include <util/locked/list.H>
#include <util/locked/queue.H>

struct MessagePending
{
    typedef msg_t* key_type;
    key_type key;
    task_t* task;

    MessagePending* prev;
    MessagePending* next;
};

class MessageQueue
{
    public:
	Spinlock lock;
	Util::Locked::List<MessagePending, MessagePending::key_type> messages;
	Util::Locked::List<MessagePending, MessagePending::key_type> responses;
	Util::Locked::Queue<task_t> waiting;
};

#endif
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